VT Cosmetics Niacinamide Glutathione Yellow Micro Bubble Serum 70mlVT Cosmetics Niacinamide Glutathione Yellow Micro Bubble Serum is a Korean skincare essential for achieving visibly brighter, smoother, and more even toned skin. This innovative formula uses dense, skin absorbing micro bubbles to deliver brightening ingredients like niacinamide and glutathione deep into the skin. Niacinamide helps fade dark spots and discolouration while refining skin texture, and glutathione works as a powerful antioxidant to restore